Pub Date : 2018-07-01DOI: 10.1109/ICWT.2018.8527789
Nivika Tiffany Somantri, Hajiar Yuliana, Iskandar
2600 MHz spectrum frequency or commonly called as the S-Band is one of the spectrum candidates that can be used for mobile wireless access network services. However, S-Band is currently employed for pay television service, so it needs analysis of refarming process to be able to move S-Band to other frequency spectrum. In this case, it is Ku-Band. Based on the analysis of refarming process using Rec. ITU-R SM.1603, the deployment process from the S-Band frequency to Ku-Band is considered optimal to implement. After knowing that the deployment process is optimal, S-Band can be implemented for LTE-Advanced network. Meanwhile, the implementation of S-Band needs to apply dimensioning process based on coverage and capacity to obtain the number of sites in accordance with the area that will be used. Based on the results of dimensioning, the number of sites used for LTE-Advanced network is 220, obtained from the result of capacity dimensioning.
{"title":"2600 MHz Frequency Spectrum Optimization for LTE-Advanced Wireless Access Network","authors":"Nivika Tiffany Somantri, Hajiar Yuliana, Iskandar","doi":"10.1109/ICWT.2018.8527789","DOIUrl":"https://doi.org/10.1109/ICWT.2018.8527789","url":null,"abstract":"2600 MHz spectrum frequency or commonly called as the S-Band is one of the spectrum candidates that can be used for mobile wireless access network services. However, S-Band is currently employed for pay television service, so it needs analysis of refarming process to be able to move S-Band to other frequency spectrum. In this case, it is Ku-Band. Based on the analysis of refarming process using Rec. ITU-R SM.1603, the deployment process from the S-Band frequency to Ku-Band is considered optimal to implement. After knowing that the deployment process is optimal, S-Band can be implemented for LTE-Advanced network. Meanwhile, the implementation of S-Band needs to apply dimensioning process based on coverage and capacity to obtain the number of sites in accordance with the area that will be used. Based on the results of dimensioning, the number of sites used for LTE-Advanced network is 220, obtained from the result of capacity dimensioning.","PeriodicalId":356888,"journal":{"name":"2018 4th International Conference on Wireless and Telematics (ICWT)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131740690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.1109/ICWT.2018.8527834
D. A. Marenda, G. M. Suranegara, A. C. Risdianto, Rifqy Hakimi, E. Mulyana
Application of virtual machine (VM) migration is one of the key applications in the management of a data center. The migration task is required for several reasons such as load balancing, maintenance, or power management. Migration task need to be optimized by improving networking (e.g. end-to-end path) between VM hypervisors. Migrating VM on the best path, will certainly give a smaller migration time. Intent (i.e., intent networking) is used as a basis in path selection on the SDN to identify better networking performance (i.e., higher bandwidth). The migration measurement is taken for three parameters which are migration time, downtime, and overhead time. The measurement result shows an improvement for three different bandwidth variation.
{"title":"Intent-Based Path Selection for VM Migration Application with Open Network Operating System","authors":"D. A. Marenda, G. M. Suranegara, A. C. Risdianto, Rifqy Hakimi, E. Mulyana","doi":"10.1109/ICWT.2018.8527834","DOIUrl":"https://doi.org/10.1109/ICWT.2018.8527834","url":null,"abstract":"Application of virtual machine (VM) migration is one of the key applications in the management of a data center. The migration task is required for several reasons such as load balancing, maintenance, or power management. Migration task need to be optimized by improving networking (e.g. end-to-end path) between VM hypervisors. Migrating VM on the best path, will certainly give a smaller migration time. Intent (i.e., intent networking) is used as a basis in path selection on the SDN to identify better networking performance (i.e., higher bandwidth). The migration measurement is taken for three parameters which are migration time, downtime, and overhead time. The measurement result shows an improvement for three different bandwidth variation.","PeriodicalId":356888,"journal":{"name":"2018 4th International Conference on Wireless and Telematics (ICWT)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123288250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.1109/ICWT.2018.8527828
I. Surjati, S. Alam, Y. K. Ningsih
This paper proposes a new design of a log periodic array microstrip antenna with parasitic air gap for Digital Video Broadcasting application with return loss value of ≤-10 dB and $mathbf{VSWR} leq 2$ at working frequency of 478 to 694 MHz. The proposed antenna consists of two layers of substrate where at the bottom layer is a log periodic microstrip antenna and at the top layer is a parasitic load separated by air gap. The bandwidth of the design antenna can be optimized by adjusting the distance of air gap between the top and bottom layers of the proposed antenna. From the simulation results can be obtained the distance gap (d) is 2 mm with the bandwidth of the antenna design is 339 MHz (421 MHz to 757 MHz). Using parasitic air gap the bandwidth of the proposed antenna can be increased until 31.49% compared to the conventional periodic log antennas.
本文提出了一种用于数字视频广播的具有寄生气隙的对数周期阵列微带天线的新设计，该天线的回波损耗值≤-10 dB $mathbf{VSWR} leq 2$ 工作频率为478至694兆赫兹。所提出的天线由两层基板组成，其中底层是对数周期微带天线，顶层是由气隙分隔的寄生负载。通过调整天线顶层和底层之间的气隙距离，可以优化天线的带宽。从仿真结果可以得到距离间隙(d)为2mm，天线设计带宽为339 MHz (421 MHz ～ 757 MHz)。利用寄生气隙，所提出的天线的带宽可以增加到31.49% compared to the conventional periodic log antennas.
{"title":"Increasing Bandwidth of Log Periodic Array Microstrip Antenna Using Parasitic Air Gap for Digital Video Broadcasting Application","authors":"I. Surjati, S. Alam, Y. K. Ningsih","doi":"10.1109/ICWT.2018.8527828","DOIUrl":"https://doi.org/10.1109/ICWT.2018.8527828","url":null,"abstract":"This paper proposes a new design of a log periodic array microstrip antenna with parasitic air gap for Digital Video Broadcasting application with return loss value of ≤-10 dB and $mathbf{VSWR} leq 2$ at working frequency of 478 to 694 MHz. The proposed antenna consists of two layers of substrate where at the bottom layer is a log periodic microstrip antenna and at the top layer is a parasitic load separated by air gap. The bandwidth of the design antenna can be optimized by adjusting the distance of air gap between the top and bottom layers of the proposed antenna. From the simulation results can be obtained the distance gap (d) is 2 mm with the bandwidth of the antenna design is 339 MHz (421 MHz to 757 MHz). Using parasitic air gap the bandwidth of the proposed antenna can be increased until 31.49% compared to the conventional periodic log antennas.","PeriodicalId":356888,"journal":{"name":"2018 4th International Conference on Wireless and Telematics (ICWT)","volume":"124 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128493311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.1109/ICWT.2018.8527835
M. S. Arifianto, A. Ridwan, M. Randa, A. Munir
This paper deals with the resonant frequency analysis based on three dimension (3D) finite-difference time-domain (FDTD) method for rectangular waveguide which is loaded with anisotropic dielectric material. The method has been implemented to analyze and solve a wide variety of electromagnetics (EM) problems. The rectangular waveguide with the cross-section of $40mathbf{mm}times 20mathbf{m}$ and loaded with anisotropic dielectric material is modeled as numerical expression of magnetic and electric fields in which the interaction of fields are analyzed using 3D-FDTD method. The results of analysis in terms of EM wave and mode that appear in the waveguide are then validated theoretically. Furthermore, similar analyses using 3D-FDTD method are also applied for an hollow rectangular waveguide as well as for a rectangular waveguide which is loaded with isotropic dielectric material. The analysis results demonstrate good agreements with the theoretical predictions, although there were 0.26-2.32% discrepancies occurred in the 3D-FDTD method.
{"title":"Resonant Frequency Analysis for Rectangular Waveguide Loaded with Anisotropic Dielectric Material Using 3D-FDTD Method","authors":"M. S. Arifianto, A. Ridwan, M. Randa, A. Munir","doi":"10.1109/ICWT.2018.8527835","DOIUrl":"https://doi.org/10.1109/ICWT.2018.8527835","url":null,"abstract":"This paper deals with the resonant frequency analysis based on three dimension (3D) finite-difference time-domain (FDTD) method for rectangular waveguide which is loaded with anisotropic dielectric material. The method has been implemented to analyze and solve a wide variety of electromagnetics (EM) problems. The rectangular waveguide with the cross-section of $40mathbf{mm}times 20mathbf{m}$ and loaded with anisotropic dielectric material is modeled as numerical expression of magnetic and electric fields in which the interaction of fields are analyzed using 3D-FDTD method. The results of analysis in terms of EM wave and mode that appear in the waveguide are then validated theoretically. Furthermore, similar analyses using 3D-FDTD method are also applied for an hollow rectangular waveguide as well as for a rectangular waveguide which is loaded with isotropic dielectric material. The analysis results demonstrate good agreements with the theoretical predictions, although there were 0.26-2.32% discrepancies occurred in the 3D-FDTD method.","PeriodicalId":356888,"journal":{"name":"2018 4th International Conference on Wireless and Telematics (ICWT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125878956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-01DOI: 10.1109/ICWT.2018.8527809
S. Indriyanto, I.Y.M. Edward
Underwater acoustic communication uses sound waves and uses water as a propagation medium. This technology has been applied in various field, such as underwater wireless sensor network (UWSN), underwater monitoring system, and surveillance system. An underwater acoustic modem is required to be able to communicate between nodes. In this paper we have designed underwater acoustic modem with ultrasonic frequency using Frequency Shift Keying (FSK) Modulation. The designed system consist of FSK modem, microcontroller, amplifier and transducer. Waterproof ultrasonic sensors JSN-SR04T are used as transducers for designed modems. This sensor works well on ultrasonic frequencies, so the FSK modem frequency is adjusted to work properly and match with the transducer used. Therefore, the mark frequency of the modem is 40 kHz and the space frequency is 43 kHz. The test results, show that the FSK Modem can send text data through water media with good results at 1200bps. Result of BER measurement indicate that at distance 100cm and 130cm obtained BER value 0%. At a distance of 150cm obtained BER value 6.2%, and at a distance of 170cm got the biggest error that is 35% This indicates that the addition of the number of bits sent and the addition of distance gives an effect to the value of BER.
{"title":"Ultrasonic Underwater Acoustic Modem Using Frequency Shift Keying (FSK) Modulation","authors":"S. Indriyanto, I.Y.M. Edward","doi":"10.1109/ICWT.2018.8527809","DOIUrl":"https://doi.org/10.1109/ICWT.2018.8527809","url":null,"abstract":"Underwater acoustic communication uses sound waves and uses water as a propagation medium. This technology has been applied in various field, such as underwater wireless sensor network (UWSN), underwater monitoring system, and surveillance system. An underwater acoustic modem is required to be able to communicate between nodes. In this paper we have designed underwater acoustic modem with ultrasonic frequency using Frequency Shift Keying (FSK) Modulation. The designed system consist of FSK modem, microcontroller, amplifier and transducer. Waterproof ultrasonic sensors JSN-SR04T are used as transducers for designed modems. This sensor works well on ultrasonic frequencies, so the FSK modem frequency is adjusted to work properly and match with the transducer used. Therefore, the mark frequency of the modem is 40 kHz and the space frequency is 43 kHz. The test results, show that the FSK Modem can send text data through water media with good results at 1200bps. Result of BER measurement indicate that at distance 100cm and 130cm obtained BER value 0%. At a distance of 150cm obtained BER value 6.2%, and at a distance of 170cm got the biggest error that is 35% This indicates that the addition of the number of bits sent and the addition of distance gives an effect to the value of BER.","PeriodicalId":356888,"journal":{"name":"2018 4th International Conference on Wireless and Telematics (ICWT)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121729626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-26DOI: 10.1109/ICWT.2018.8527810
E. Mulyana, Rifqy Hakimi, Hendrawan
In this paper we present the design and implementation of a chatbot-based virtual assistant called LTKA-Bot. Its main function is to streamline and to automate manual and administrative tasks while supporting other course-related activities. It differs from other recent approaches in that it is based on the ChatOps paradigm instead of on some AI-based schemes. LTKA-Bot introduces a case of automation and demonstrates its potentials in the area of higher education which is steadily transformed to cope with technological progresses and administrative policy dynamics including accreditation. International accreditation body such as ABET requires fulfillment of certain criteria which in turn also requires appropriate course design and quite a lot of document works. LTKA-Bot borrows the idea of automation which is very common in the modern tech companies to cope with such challenges. It facilitates more efficient course-related activities while satisfying all document requirement with minimal effort.
{"title":"Bringing Automation to the Classroom: A ChatOps-Based Approach","authors":"E. Mulyana, Rifqy Hakimi, Hendrawan","doi":"10.1109/ICWT.2018.8527810","DOIUrl":"https://doi.org/10.1109/ICWT.2018.8527810","url":null,"abstract":"In this paper we present the design and implementation of a chatbot-based virtual assistant called LTKA-Bot. Its main function is to streamline and to automate manual and administrative tasks while supporting other course-related activities. It differs from other recent approaches in that it is based on the ChatOps paradigm instead of on some AI-based schemes. LTKA-Bot introduces a case of automation and demonstrates its potentials in the area of higher education which is steadily transformed to cope with technological progresses and administrative policy dynamics including accreditation. International accreditation body such as ABET requires fulfillment of certain criteria which in turn also requires appropriate course design and quite a lot of document works. LTKA-Bot borrows the idea of automation which is very common in the modern tech companies to cope with such challenges. It facilitates more efficient course-related activities while satisfying all document requirement with minimal effort.","PeriodicalId":356888,"journal":{"name":"2018 4th International Conference on Wireless and Telematics (ICWT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128798210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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